Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Evidence for X (3872) →j/ψ π+ π-Produced in Single-Tag Two-Photon Interactions. / Belle Collaboration.
в: Physical Review Letters, Том 126, № 12, 122001, 23.03.2021.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Evidence for X (3872) →j/ψ π+ π-Produced in Single-Tag Two-Photon Interactions
AU - The BELLE collaboration
AU - Teramoto, Y.
AU - Uehara, S.
AU - Masuda, M.
AU - Adachi, I.
AU - Aihara, H.
AU - Al Said, S.
AU - Asner, D. M.
AU - Atmacan, H.
AU - Aushev, T.
AU - Ayad, R.
AU - Babu, V.
AU - Behera, P.
AU - Belenõ, C.
AU - Bennett, J.
AU - Bhardwaj, V.
AU - Bhuyan, B.
AU - Bilka, T.
AU - Biswal, J.
AU - Bonvicini, G.
AU - Bozek, A.
AU - Bračko, M.
AU - Browder, T. E.
AU - Campajola, M.
AU - Červenkov, D.
AU - Chang, M. C.
AU - Chang, P.
AU - Chekelian, V.
AU - Chen, A.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Cho, K.
AU - Cho, S. J.
AU - Choi, S. K.
AU - Choi, Y.
AU - Choudhury, S.
AU - Cinabro, D.
AU - Cunliffe, S.
AU - De Nardo, G.
AU - Eidelman, S.
AU - Gabyshev, N.
AU - Garmash, A.
AU - Krokovny, P.
AU - Kuzmin, A.
AU - Matvienko, D.
AU - Shebalin, V.
AU - Usov, Y.
AU - Vinokurova, A.
AU - Vorobyev, V.
AU - Zhilich, V.
AU - Zhulanov, V.
N1 - Publisher Copyright: © 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/3/23
Y1 - 2021/3/23
N2 - We report the first evidence for X(3872) production in two-photon interactions by tagging either the electron or the positron in the final state, exploring the highly virtual photon region. The search is performed in e+e-→e+e-J/ψ π+ π-, using 825 fb-1 of data collected by the Belle detector operated at the KEKB e+e-collider. We observe three X(3872) candidates, where the expected background is 0.11±0.10 events, with a significance of 3.2σ. We obtain an estimated value for γB(X(3872)→J/ψ π+ π-) assuming the Q2 dependence predicted by a cc meson model, where-Q2 is the invariant mass squared of the virtual photon. No X(3915)→J/ψ π+ π-candidates are found.
AB - We report the first evidence for X(3872) production in two-photon interactions by tagging either the electron or the positron in the final state, exploring the highly virtual photon region. The search is performed in e+e-→e+e-J/ψ π+ π-, using 825 fb-1 of data collected by the Belle detector operated at the KEKB e+e-collider. We observe three X(3872) candidates, where the expected background is 0.11±0.10 events, with a significance of 3.2σ. We obtain an estimated value for γB(X(3872)→J/ψ π+ π-) assuming the Q2 dependence predicted by a cc meson model, where-Q2 is the invariant mass squared of the virtual photon. No X(3915)→J/ψ π+ π-candidates are found.
UR - http://www.scopus.com/inward/record.url?scp=85103505018&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.126.122001
DO - 10.1103/PhysRevLett.126.122001
M3 - Article
C2 - 33834793
AN - SCOPUS:85103505018
VL - 126
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 12
M1 - 122001
ER -
ID: 28255171